Rachel Weisz didn't use a body double for her nude scenes in 'Agora'.

The actress plays philosopher and astronomer Hypatia and said she avoided junk food in an attempt to prepare for the scenes.

In the film, the Oscar-winning starlet gets out of a bath while a slave attends to her.

"It was all me, never even thought of using a double," Weisz said in an interview, Female First reports.

"Although I was thinking about baby fat - but I think most of it had gone by the time I went before the cameras."

Weisz gave birth to a son, Henry, before filming took place.

In 'Agora', A love triangle between Hypatia, the slave and a student forms, although Weisz says the triangle was not sexual.

In a Female First article, she explained: "As far as we know she famously never had sex, she died a virgin. But I thought she'd get at least one kiss."